Dudediligence.

Arthur J. Gallagher & Co

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Last 12 months

Sales planned on beside the trades reported on , and whether each names a .

Planned ·

$38.5M

17 notices · 158,850 sh

Oct 2025 to Oct 2026

Reported ·

$17.0M

9 sales · 4 buys · $988,490 bought

Oct 2025 to Jun 2026

The two figures cover different periods.

None of the 9 reported sales carry the 10b5-1 box. Together they are 0.03% of the shares on issue.

PLANNED · FORM 144Oct 2025 to Oct 2026REPORTED · FORM 4Oct 2025 to Jun 2026N2025DJ2026FMAMJJASO2026-09-15: CARY RICHARD C, Form 1442026-09-15: Matrix Trust Co, Form 1442026-09-02: Hudson Scott R, Form 1442026-08-24: Walter D. Bay, Form 1442026-08-19: Mead Christopher E, Form 1442026-06-16: Matrix Trust Co, Form 1442026-06-02: CARY RICHARD C, Form 1442026-03-18: Matrix Trust Co, Form 1442026-03-06: Hudson Scott R, Form 1442026-03-05: Mead Christopher E, Form 1442026-03-02: GALLAGHER J PATRICK JR, Form 1442025-12-23: Mead Christopher E, Form 1442025-12-22: Douglas K. Howell, Form 1442025-12-19: Bay Walter D., Form 1442025-12-17: Matrix Trust Co, Form 1442025-11-21: Mead Christopher E, Form 1442025-11-18: CARY RICHARD C, Form 1442025-11-03: Pesch Michael Robert, bought2025-11-18: CARY RICHARD C, sold2025-11-21: Mead Christopher E, sold2025-12-19: Bay Walter D., sold2025-12-22: HOWELL DOUGLAS K, sold2025-12-23: Mead Christopher E, sold2026-03-02: GALLAGHER J PATRICK JR, sold2026-03-05: Mead Christopher E, sold2026-03-06: Hudson Scott R, sold2026-06-02: CARY RICHARD C, sold
under a no plan named▼ sale▲ buysize is dollars

Form 144 notices, newest first

2026-09-15CARY RICHARD C, Controller, CAO$252,858
1,000 shno plan dateForm 4s on file end Jun 23144 ↗
2026-09-15Matrix Trust Co, Trustee for Arthur J Gallagher Rabbi Trust$3,799,500
15,000 shno plan dateForm 4s on file end Jun 23144 ↗
2026-09-02Hudson Scott R, Vice President$3,169,595
12,000 shno plan dateForm 4s on file end Jun 23144 ↗
2026-08-24Walter D. Bay, General Counsel$3,263,880
12,000 shno plan dateForm 4s on file end Jun 23144 ↗
2026-08-19Mead Christopher E, VICE PRESIDENT$899,588
3,500 shno plan dateForm 4s on file end Jun 23144 ↗
2026-06-16Matrix Trust Co, Trustee for Arthur J Gallagher Rabbi Trust$3,238,500
15,000 shno plan dateForm 4s on file end Jun 23144 ↗
2026-06-02CARY RICHARD C, Controller, CAO$618,000
3,000 shno plan date144 ↗
Form 4, 2026-06-02: sold 3,000 at $206.00 Form 4 ↗
2026-03-18Matrix Trust Co, Trustee for Arthur J Gallagher Rabbi Trust$3,137,400
15,000 shno plan dateno Form 4 on file144 ↗
2026-03-06Hudson Scott R, Vice President$864,766
3,800 shno plan date144 ↗
Form 4, 2026-03-09: sold 3,800 at $227.57 Form 4 ↗
2026-03-05Mead Christopher E, VICE PRESIDENT$908,472
4,000 shno plan date144 ↗
Form 4, 2026-03-09: sold 4,000 at $227.12 Form 4 ↗
2026-03-02GALLAGHER J PATRICK JR, CEO$6,322,071
27,450 shno plan date144 ↗
Form 4, 2026-03-04: sold 27,450 at $230.31 Form 4 ↗
2025-12-23Mead Christopher E, VICE PRESIDENT$1,032,440
4,000 shno plan date144 ↗
Form 4, 2025-12-29: sold 4,000 at $258.11 Form 4 ↗
2025-12-22Douglas K. Howell, VP & Chief Financial Officer$1,291,250
5,000 shno plan date144 ↗
Form 4, 2025-12-29: sold 5,000 at $258.05 Form 4 ↗
2025-12-19Bay Walter D., General Counsel$4,041,750
15,850 shno plan date144 ↗
Form 4, 2025-12-23: sold 15,850 at $255.00 Form 4 ↗
2025-12-17Matrix Trust Co, Trustee for the trust relating to the Plan$3,779,700
15,000 shno plan dateno Form 4 on file144 ↗
2025-11-21Mead Christopher E, VICE PRESIDENT$313,426
1,250 shno plan date144 ↗
Form 4, 2025-11-25: sold 1,250 at $250.74 Form 4 ↗
2025-11-18CARY RICHARD C, Controller, CAO$1,566,000
6,000 shno plan date144 ↗
Form 4, 2025-11-20: sold 6,000 at $261.00 Form 4 ↗